feat: add `version` Sloth subcommand

lib/deps.nix

@@ -84,11 +84,17 @@
         mv init.lua $dir
 
         cat <<'LUA' > $dir/deps.lua
-        return ${pluginsLuaDef plugins}
+        ${pluginsLuaDef plugins}
+        LUA
+
+        cat <<'LUA' > $dir/version.lua
+        ${versionLua version}
         LUA
       '';
     };
 
+  versionLua = version: with lua; nix2lua (return (lambda (return version)));
+
   textOrContent = content:
     if isPath content
     then fileContents content
@@ -127,7 +133,8 @@
           inherit (plugin) ft;
         });
     };
-  pluginsLuaDef = plugins: lua.nix2lua (foldl' pluginLuaDef {} plugins);
+  pluginsLuaDef = plugins:
+    with lua; nix2lua (return (foldl' pluginLuaDef {} plugins));
 in {
   inherit normalizePlugin;
   inherit normalizePlugins;

lua/sloth-flake/init.lua

@@ -230,7 +230,12 @@ local commands = {
     for _, plugin in ipairs(plugins) do
       M.load(plugin)
     end
-  end
+  end,
+
+  version = function()
+    local version = require('sloth-flake.version')
+    print(string.format('Sloth v%s', version()))
+  end,
 }
 
 function sloth_cmd(param)